Have ya'll ever put Ivory Soap in the Microwave? If not this is something that you have to do with your kids! What happens is absolutely amazing! Putting soap in the microwave for various activities is currently one of my kids favorite past time activities.
Fun science project for kids: You may recall that Ivory soap floats in water. The reason for that is that unlike other soap, it has a a bunch of air whipped into it. This is important because when you microwave it, all those tiny air bubbles expand and make your soap look like this. (More on click through.)